synchronous

问题 Please forgive me if this is an obvious one. I have an unknown amount of elements on a page, which I need to loop through one at a time and do stuff to. However, I need the loop to pause until the functions used on the elements have completed, and then continue on to the next iteration. I tried doing this in a $.each loop, but it fired off the commands far to quickly and finished without waiting for them to complete. Any ideas? $('elem').each(function(){ $(this).fadeIn().wait(5000).fadeOut();

问题 Actually there many examples and I have used one of them. But it works asynchronous, I mean it is not waiting the function that I called to finish. function ProcessSend() Set oXMLHTTP = CreateObject("MSXML2.XMLHTTP.4.0") Set oXMLDoc = CreateObject("MSXML2.DOMDocument") oXMLHTTP.onreadystatechange = getRef("HandleStateChange") strEnvelope = "callNo="&callNo&"&exp="&exp call oXMLHTTP.open("POST","http://localhost:11883/ServiceCall.asmx/"&posFirm,true) call oXMLHTTP.setRequestHeader("Content

问题 In the synchronous/blocking model of computation we usually say that a thread of execution will wait (be blocked ) while it waits for an IO task to complete. My question is simply will this usually cause the CPU core executing the thread to be idle, or will a thread waiting on IO usually be context switched out and put into a waiting state until the IO is ready to be processed? 回答1: A CPU core is normally not dedicated to one particular thread of execution. The kernel is constantly switching

问题 I am trying to understand the basic example provided on the introduction page of tornado documentation. It has 2 blocks of code. The Synchronous one is fine for me, and I do understand it. But the asynchronous one is one I am not able to understand. Synchronous from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = http_client.fetch(url) return response.body Asynchronous from tornado.httpclient import AsyncHTTPClient def asynchronous_fetch

问题 I have a piece of code that follows the workflow: for index in 0..<self!.recordedData.count { //Do work here that involves fetching data from coredata and prerendering an image for each index } reloadUIWithData() The workflow is intended to be: All work in the for loop to be completed ReloadUIWithData to be executed. However, the reloadUIWithData function is being called before the work in the loop is finished. Is there any way to enforce that all work is completely finished inside the for

问题 I have gone through many posts. Some say that after jquery 1.8, its deprecated. For some, it still works. How can I implement this $.ajaxSetup({async:false}); duration_reco = $.ajax({ url : newurl, async : false, dataType : 'json', }); console.log(duration_reco.responseText); It says durtaion_reco is undefined. I have checkeed to see that duration_reco cotaines valid data. the ajax request is executing synchronously. 回答1: $.ajax supports many different types of requests (which jQuery calls

问题 I've been doing this to synchronously read the whole stdin data under Linux: var buffer = fs.readFileSync('/dev/stdin'); This obviously won't work on Windows since there is no /dev/stdin file. What could I do to achieve the same? 回答1: The module readline-sync do the job very well. npm install readline-sync and then: var readlineSync = require('readline-sync'); var answer = readlineSync.question('What is your favorite food? :'); console.log('Oh, so your favorite food is ' + answer); https:/

问题 Today, I had to restart my browser due to some issue with an extension. What I found when I restarted it, was that my browser (Chromium) automatically updated to a new version that doesn't allow synchronous AJAX-requests anymore. Quote: Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check http://xhr.spec.whatwg.org/. I need synchronous AJAX-requests for my node.js applications to work though, as they

问题 New to ajax, so asking a very basic question. -- Is there no way to make a Synchronous ajax call (async:false) with timeout set on it.? http://www.ajaxtoolbox.com/request/ Timeout works perfect with Asynchronous call though in my application, but for one particular scenario, I need a Synchronous call (the javascript should actually wait untill it hears back from the server), and this also works fine. But I need to handle a scenario where the sever could take long and a ajax timeout may be

问题 I am trying to load parsed data in cells, but the problem is that it is happening synchronously and UitableView doesn't show until the data has finished loading. I tried to solve the problem by using performSelectorInBackground, but now data isn't loaded in the cells until I start scrolling. Here is my code: - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. [self performSelectorInBackground:@selector(fethchData) withObject:nil]